Global Patent Index - EP 2177057 A1

EP 2177057 A1 20100421 - SOUND REPRODUCTION SYSTEMS

Title (en)

SOUND REPRODUCTION SYSTEMS

Title (de)

TONWIEDERGABESYSTEME

Title (fr)

SYSTÈMES DE REPRODUCTION SONORE

Publication

EP 2177057 A1 (EN)

Application

EP 08775858 A

Priority

  • GB 2008002310 W
  • GB 0712998 A

Abstract (en)

[origin: WO2009004352A1] A sound reproduction system comprising electro-acoustic transducer means, and transducer drive means for driving the electro-acoustic transducer means (10, 11, 12) in response to a plurality of channels of a sound recording, the transducer drive means comprising filter means (H; C) which is configured to reproduce at a listener location an approximation to the local sound field that would be present at a listener's ears in recording space, taking into account the characteristics and intended position of the electro-acoustic transducer means relative to the ears of the listener, the electro-acoustic transducer means comprising first sound emitter means (10) which provides an intermediate sound emission channel, second sound emitter means (11) which provides a left sound emission channel and a third sound emitter means (12) which provides a right sound emission channel, the first sound emitter means being located intermediate of second and third sound emitter means, and at least one of the second and third sound emitter means being such that predominantly higher frequencies are transmitted closer to the first sound emitter means and predominantly lower frequencies are transmitted away from the first sound emitter means.

IPC 8 full level

H04S 1/00 (2006.01); H04R 1/26 (2006.01); H04S 3/00 (2006.01); H04S 5/00 (2006.01)

CPC (source: EP US)

H04S 5/00 (2013.01 - EP US); H04R 1/26 (2013.01 - EP US); H04R 2205/024 (2013.01 - EP US); H04S 3/002 (2013.01 - EP US); H04S 2400/05 (2013.01 - EP US); H04S 2420/01 (2013.01 - EP US)

Citation (search report)

See references of WO 2009004352A1

Designated contracting state (EPC)

AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR

Designated extension state (EPC)

AL BA MK RS

DOCDB simple family (publication)

WO 2009004352 A1 20090108; EP 2177057 A1 20100421; EP 2177057 B1 20161221; GB 0712998 D0 20070815; JP 2010532614 A 20101007; JP 5400769 B2 20140129; US 2010202629 A1 20100812; US 9961468 B2 20180501

DOCDB simple family (application)

GB 2008002310 W 20080704; EP 08775858 A 20080704; GB 0712998 A 20070705; JP 2010514126 A 20080704; US 66734208 A 20080704